David Evans and Associates Inc. 6/23/2021 Amendment 2

• Three phase 480V electrical power and control equipment, rack mounted, on a free standing post and roof assembly including utility power service equipment and automatic transfer switch for standby generator power service, 120V power distribution, variable frequency drives (VFDs) and PLC-based control panel. Primary level sensing will be by ultrasonic level sensor with a single float for high level alarm. • A Cummins 480V diesel fueled generator with level 2 factory enclosure, and skid-mount fuel tank will provide standby power. Final generator sizing will be confirmed during the design phase of work. • Add new water service including meter, reduced pressure principle backflow device with heat trace, in an insulated Hot Box, for service to a frost-proof yard hydrant. • The electrical equipment and Hot Box will be secured with an eight-foot tall vinyl coated chain link fence, with single person gate and three strand barb wire. Some park fencing will be relocated to "reset" the perimeter of the park and adjust the existing park maintenance access gate locations. • Extend or re-route existing gravity sewer connections from Shore Ave. and W. Mukilteo Blvd to discharge to the new station rather than the existing station • Add a new 6" HDPE force main by open-cut construction from the new lift station valve vault about 2,700 feet east along Shore Ave. to a new saddle manhole over an existing 20" sewer main. The lift station and gravity sewer improvements are proposed to be completed under one construction contract and the force main shall be completed under a separate construction contract. The City Technical Service Group will furnish and fabricate the VFD and control panel elements including the primary elements in each panel. Scope of Work: The proposed scope of services for the design, bidding and construction support phases of engineering services is presented below. DEA will be supported by Bob Casne, P.E. of RJC Engineering, PLLC, for the electrical engineering elements and will be supported by HWA GeoSciences, Inc. for the geotechnical evaluation. RJC Engineering will be supported by Richard Sample Engineering for completion of the Arc Flash Analysis. (The task numbering is continued from the Pre-design phase Scope of Work.) 5. Project Management— Design, Bidding and Construction Support 5.1.Project Planning 5.2.Monitoring and Control — review and preparation of monthly status reports and invoice packets 5.3.Closeout— complete final project closeout 6. Design Support and Submittals 6.1.Geotechnical Evaluation — complete two additional soil borings to a total combined depth of 65 feet and evaluate soil conditions on Shore Ave. in the vicinity of the proposed replacement sanitary sewer and the proposed wet well structure. 6.2.Additional Survey — allowance to complete up to one additional day of field survey and supporting research and base map updates for additional detail or area in the project impact area. 6.3.SEPA Checklist Input — provide data regarding anticipated disturbance area and cut and fill quantity estimates for each construction contract, for City's use in preparing the SEPA checklist for the project impacts. David Evans and Associates, Inc. Page 2 of 8